Aarch64 buildfix.

sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc

Index: sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
diff --git a/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc b/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
index ae35677de2b9046e8bb55cd23916952f6ae6d383..fc0ecf2e326ec0ad98b92da7bd1cb506ee38b210 100644
--- a/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
+++ b/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
@@ -1877,15 +1877,23 @@ BPF_TEST_C(SandboxBPF, PthreadBitMask, PthreadPolicyBitMask) {
 
 #if defined(__aarch64__)
 #ifndef PTRACE_GETREGS
+#if defined(__GLIBC__)
+#define PTRACE_GETREGS static_cast<enum __ptrace_request>(12)
+#else
 #define PTRACE_GETREGS 12
-#endif
-#endif
+#endif  // defined(__GLIBC__)
+#endif  // !defined(PTRACE_GETREGS)
+#endif  // defined(__aarch64__)
 
 #if defined(__aarch64__)
 #ifndef PTRACE_SETREGS
+#if defined(__GLIBC__)
+#define PTRACE_SETREGS static_cast<enum __ptrace_request>(13)
+#else
 #define PTRACE_SETREGS 13
-#endif
-#endif
+#endif  // defined(__GLIBC__)
+#endif  // !defined(PTRACE_SETREGS)
+#endif  // defined(__aarch64__)
 
 // Changes the syscall to run for a child being sandboxed using seccomp-bpf with
 // PTRACE_O_TRACESECCOMP.  Should only be called when the child is stopped on